The purpose of this study was to ensure accuracy in radiation dose delivery, external dosimetry quality audit has an equal importance with routine dosimetry performed at clinics. To do so, dosimetry quality audit was organized by the Secondary Standard Dosimetry Laboratory (SSDL) of Pakistan Institute of Nuclear Science and Technology (PINSTECH) at the national level to investigate and minimize...

BACKGROUND Radiofrequency (RF) cardiac catheter ablation procedures may require extended fluoroscopic exposure resulting in elevated radiation risk. The aim of the present study was to accurately establish RF ablation radiation risk levels and to provide means for accurate patient risk estimation from studies performed in any electrophysiology laboratory. METHODS AND RESULTS Fluoroscopy requi...

Quartz obtained from structural materials (bricks, tiles, etc.) is usually employed in retrospective accident dosimetry using the thermoluminescence (TL) technique. However, the TL response can be different depending on the sample due to the different concentration of the impurities in quartz lattice and the glow curves themselves show an enormous variety of shapes. In order to investigate the ...

INTRODUCTION SPC-raf and SPC-myc transgenic mice develop disseminated and circumscribed lung adenocarcinoma respectively, allowing for assessment of carcinogenesis and treatment strategies. The purpose of this study was to investigate the technical feasibility, the correlation of initial findings to histology and the administered radiation dose of combined micro-PET/micro-CT in these animal mod...

PURPOSE To present the results and discuss potential insights gained through surveys on reference dosimetry practices. METHODS Two surveys were sent to medical physicists to learn about the current state of reference dosimetry practices at radiation oncology clinics worldwide. A short survey designed to maximize response rate was made publicly available and distributed via the AAPM website an...

Some of the more relevant recent achievements and developments in the field of external radiation dosimetry are reviewed in this presentation. Among them, topics related to personal dosimetry, as the relative role of active and passive methods and the features of some recently proposed new methods. Electronic personal dosemeters and Optically Stimulated Luminescence, OSL, have already accredite...

Lithium formate has shown to be a material with properties suitable for electron paramagnetic resonance (EPR) dosimetry, among them up to 7 times higher sensitivity compared to alanine, which is a well-established EPR detector material for dose determinations in radiotherapy. The aim of this thesis was to further investigate the properties of lithium formate and develop the dosimetry system tow...

The red persistent luminescence phosphors SrS: Eux2+, Pry3+ (x = 0∼0.001, y 0∼0.003) were synthesized by the solid-state reaction method in a weak reducing atmosphere of active carbon. synthetic parameters, photoluminescence characteristics, and dynamic properties thermoluminescence studied systematically. According to results spectra Pry3+, energy level scheme was confirmed quantitatively. Bas...